results assume a linear transition between measurement points and are a result of the following equations:

Where:

DS8921, DS8921A, DS8921AT

SNLS374C – MAY 1998 – REVISED APRIL 2013

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Driver Switching Characteristics (continued)

SINGLE ENDED CHARACTERISTICS

Symbol

Conditions

Min

Typ

Max

Units

8921

8921A

8921AT

(Figure 3 and Figure 4)

5

8

8

9.5

ns

(Figure 7 and Figure 8)

5

8

8

9.5

ns

(Figure 7 and Figure 8)

Skew

1

5

3.5

3.5

ns

(Figure 3 and Figure 4)

(1)

Difference between complementary outputs at the 50% point.

Driver Switching Characteristics

(1)

DIFFERENTIAL CHARACTERISTICS

Symbol

Conditions

Min

Typ

Max

Units

8921

8921A

8921AT

10

15

15

15

ns

(Figure 3, Figure 5, and

Figure 6)

10

15

15

15

ns

(Figure 3, Figure 5, and

Figure 6)

0.5

6

2.75

2.75

ns

(Figure 3, Figure 5, and

Figure 6)

(1)

Differential Delays are defined as calculated results from single ended rise and fall time measurements. This approach in establishing

AC performance specifications has been taken due to limitations of available Automatic Test Equipment (ATE). The calculated ATE

AC Test Circuits and Switching Diagrams

Figure 1.

4

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